Access multiple GET parameters in PHP without bracket notation [duplicate]

There's no built in way to support ?foo=bar&foo=baz.

Daniel Morell proposed a solution which manually parses the URL string and iteratively builds up an array when multiple instances of the parameter exist, or returns a string when only one parameter exists (ie; matches the default behaviour).

It supports both types of URLs, with and without a bracket:

?foo=bar&foo=baz // works
?foo[]=bar&foo[]=baz // works

/**
 * Parses GET and POST form input like $_GET and $_POST, but without requiring multiple select inputs to end the name
 * in a pair of brackets.
 * 
 * @param  string $method      The input method to use 'GET' or 'POST'.
 * @param  string $querystring A custom form input in the query string format.
 * @return array  $output      Returns an array containing the input keys and values.
 */
function bracketless_input( $method, $querystring=null ) {
    // Create empty array to 
    $output = array();
    // Get query string from function call
    if( $querystring !== null ) {
        $query = $querystring;
    // Get raw POST data
    } elseif ($method == 'POST') {
        $query = file_get_contents('php://input');
    // Get raw GET data
    } elseif ($method == 'GET') {
        $query = $_SERVER['QUERY_STRING'];
    }
    // Separerate each parameter into key value pairs
    foreach( explode( '&', $query ) as $params ) {
        $parts = explode( '=', $params );
        // Remove any existing brackets and clean up key and value
        $parts[0] = trim(preg_replace( '(\%5B|\%5D|[\[\]])', '', $parts[0] ) );
        $parts[0] = preg_replace( '([^0-9a-zA-Z])', '_', urldecode($parts[0]) );
        $parts[1] = urldecode($parts[1]);
        // Create new key in $output array if param does not exist.
        if( !key_exists( $parts[0], $output ) ) {
            $output[$parts[0]] = $parts[1];
        // Add param to array if param key already exists in $output
        } elseif( is_array( $output[$parts[0]] ) ) {
            array_push( $output[$parts[0]], $parts[1] );
        // Otherwise turn $output param into array and append current param
        } else {
            $output[$parts[0]] = array( $output[$parts[0]], $parts[1] );
        }
    }
    return $output;
}

you can try something like this:

foreach($_GET as $slug => $value) {
#whatever you want to do, for example
print $_GET[$slug];
}